Even if you use one of the above drivers, you
may not be able to automatically update the time depending on the
device/PLC CPU. For supported CPUs, see the associated driver's
"GP-Pro EX Device/PLC Connection Manual".
When resetting or turning OFF the display unit,
its clock data is initialized. Use the clock update feature to
automatically set the display unit clock. Please refer to the
Settings Guide for details.
5.4.1 Common - Clock Update
Settings